Towillegar



(No Model.) 2 Sheets-Sheet 1.

D. RISLEY. STEAM BOILER ATTACHMENT.

No. 511,968. Patented Jan. 2, 1894.

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2 Shets-Sheet 2.

(No Model.)

BISLEY STEAM BOILER ATTACHMENT.

Patented Jan. 2, 1894.

IIIIJIIIIIIIIIIIIIIII IIIIIIIIIIIIIII'IIIIIIII/II/IIII/I/lil/11/1211),rill/Ini n validly,ziilr,bi,illllziii m5Nqmcmnl. LITHOGFAPNING COMPANY.

Wihyzsscs UNITED STATES PATENT OFFICE.

DAVID RISLEY, OF OOLFAX, \VASIIINGTON, ASSIGNOR OF ONE-HALF TO EPHRIAMBALDWIN, OF SAME PLACE.

STEAM-BOILER ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 511,968, dated January2, 1894. A

Application filed July 25, 1893. Serial No. 481,436. (No model.)

To all whom it may concern:

Be it known that I, DAVID RISLEY, a citizen of the United States,residing at Colfax, n the county of IVhitman and State of Washmgton,have invented a new and useful Steam- Boiler Attachment, of which thefollowing is a specification.

This invention relates to steam boiler attachments; and it has for itsobject to provide an improved attachment especially adapted for use inconnection with locomotive boilers of the traction or thrashing machineengine type, which frequently employ straw for fuel.

To this end the main and primary object of the present invention is toprovide an improved attachment which converts the ordinary straight flueboiler furnace into a straw burning furnace without any change in theconstruction thereof, while at the same time, together with auxiliarydevices, providing means for efficiently heating up the feed water forthe boiler.

With these and other objects in view which will readily appear as thenature of the invention is better understood the same consists in thenovel construction, combination and arrangements of parts hereinaftermore fully described, illustrated and claimed.

In the accompanying drawings:Figure l is a side elevation partly insection of a traction engine having a heater attachment connectedtherewith. Fig. 2 is an enlarged longital coil of circulating pipes D.

tudinal sectional view of the fire box, showing the false crown sheet inposition therein. Fig 3 is a vertical cross section on the line xx ofFig. 2. Fig. 4 is a detail plan view of the false crown sheet coil inposition within the fire box and the top covering thereof removed.

Referring to the accompanying drawings, A represents a traction engineof the ordinary type, the straight fine boiler B, of which, has its firebox 0, located at one end thereof, and is adapted to accommodate thereina horizon- The horizontal coil of circulating pipes D, is adapted to bearranged above the fire grate E, of the fire box, and below the line ofthe bottom row of the fines in the boiler, so as to not interfere withthe free heat circulation through such flues. The said horizontal coilof pipes D, forms the main body of a false crown sheet, for the firebox, located intermediate of the top and bottom thereof, and said coilis covered at its top by a top covering of asbestus d, and fire clay d,on top of such asbestus, and which, together, form a closed covering forthe crown sheet of pipes, so as to prevent the hot air from passingdirectly therethrough, and causing it to circulate around the front endthereof before entering the dues. curved baffle plate F, embraces thefront ends of the coil D, and the covering therefor, and provides meansfor properly holding the coil crown sheet in its proper position withinthe fire box of the boiler.

By reason of the false crown sheet coil D, in the fire box of the boilerB, the said boiler can be readily adapted for burning straw at a smallexpense, without the necessity of the employment of any return flues,and said coil D, is provided at one end thereof with the depending inletpipe G, which passes through the bottom of the fire box and hasconnected thereto one end of the circulating feed pipe g. The said coilD, is also provided at its opposite side with the depending outlet pipeG, which passes out through the front draft end of the fire box, and hasconnected thereto one end of the boiler pipe g, connected atits otherend to one sideof the boiler B, and having a valve 9 The circulatingfeed pipe 9, which is attached at one end to the inlet pipe G, of thecrown coil D, is'provided at suitable points thereon with the checkvalves H, and the globe valves h, which prevent the return flow of watertherethrough, and also provide for cutting off the circulation of waterentirely beyond the globe valves. The said circulating feed pipe isconnected at its other end to one end of the heating coil I, arrangedinside of the steam heating box J, disposed at one side of the boiler13, and said circulating feed pipe g, has connected thereto adjacent tothe box J, between the same and the first globe valve h, one end of theshort nipple connection K, having a check valve is and a globe valve is,and providing means for directing the water from the coil I, directlyinto the boiler when necessary, described.

The coil I, inside of the box J, is kept constantly heated by means ofthe exhaust steam from the engine cylinder L,which steam passes from thesaid cylinder through the pipe Z, to the box J, and is carried from thebox into the smoke stack of the boilerthrough the exhaust pipe 5',thereby providing means whereby the feed water for the boiler isthoroughly heated up before passing through the pipe g, and the coil D,where it is additionally heated before being carried into the boilerthrough the boiler pipe g. The heating coil I, is fed by the pump pipeM, connected at one end to such coil within the steam box and at itsother end to an ordinary feed pump N, which has the usual connectionsand is operated in the usual manner in order to pump water into theboiler.

A water circulating pipe 0, is connected to one side of the boiler 13,and is coupled onto the pipe 9, at 0, to provide means for maintaining aconstant circulation of water through the crown coil D, when the feedpump of the apparatus is not in use, thereby providing means forprolonging thelife of the coil D, and also keeping up the necessarycirculation of water in the,boiler. The pipe 0, is provided with acut-off valve P, to shut oif communication from the same and the pipe 9,and beyond the coupling or connection 0, and communicating with suchcoupling is arranged a blow-0d cook or valve Q, which provides forblowing off or discharging any accumulations of sediment from the crowncoil, or in the pipe connections therewith.

When the feed pump N, is in operation, it will be apparent that aconstant circulation of water is maintained through the pipe M, coil I,pipe 9, coil D, into the boiler-through the boiler pipe 9, whereby theboiler is supplied with the necessary water, and it will be apparentthat while this operation is continued the feed water is thoroughlyheated up in passing through the coils I, and D, which are connectedwith each other in order to provide efficient means for heating the feedwater up to such a degree that its admission into the boiler will notmaterially lessen the temperature of the water therein. It will beobvious that in time the crown coil D, will become defective and leak sothat its function as a heater will have been destroyed, but eventhen itsuse as a false crown sheet for the fire box may be continued until it isconvenient to replace the old coil by a new one. It is therefore simplynecessary in such event to cut off the circulation of water from suchcrown coil, and to do this the first valve 72, beyond the nipple K, isclosed, thereby cutting oif communication between the pipe g, and thecrown coil D, and the circulation with such coil through the pipe 9', iscut-01f by closing the valve 9 Now the valve k, in the nipple connectionK, is opened so as will be presently minor details of construction maybe resorted to without departing from the principle or sacrificing anyof the advantages of this invention.

Having thus described the invention, what is claimed, and desired to besecured by Let ters Patent, is

1. In a steam boiler attachment, the com-' bination with the boiler firebox; of a false crown coil of horizontal pipes, adapted to be arrangedwithin said fire box intermediate of the top and bottom thereof andbelow the line of fines, an imperforate asbestos and fire clay topcovering arranged on top of said coil,

an end curved baffle plate snugly embracing the front ends of the coilpipes and their asbestus and fire clay covering, andcirculating pipeconnections with said coil and the sides of the boiler, substantially asset forth.

2. In a steam boiler attachment, the combination with the boiler havinga fire box at one end; of a covered false crown coil arranged withinsaid fire box intermediate of the top and bottom thereof, pipeconnections with the crown coil of theboiler, an auxiliary steam heatedcoil, suitably arranged and connected with a feed pump and valved pipeconnections connecting said steam heated coil with the connections ofthe crown coil and a feed pump, substantially as set forth.

3. In a steam boiler attachment, a covered false crown coil adapted tobe arranged within a steam boiler fire box below the flue ends therein,an end baffle plate snugly embrac- ITO ing the front ends of the coiland its covering and arranged adjacent to the front wall of the fire boxto leave a front circulating space, and suitable circulating connectionswith said coil, substantially as set forth.-

4. In a steam boiler attachment, the combination of a crown coil adaptedto be arranged within a steam boiler fire box, pipe connections with thecrown coil and the boiler, a suitably arranged steam box, an auxiliaryheating coil located inside of the steam box and connected with a feedpump, a circulating feed pipe connected with said heating coil and oneof the pipe connections of the crown coil, a valved nipple connectionfrom said circulating feed pipe to one side of the boiler, and a valvedcirculatingpipe from one side of the boiler to one of thepipe-connections of the crown coil, substantially as set forth.

5. In a steam boiler attachment, the combination with a locomotiveboiler and the engine cylinder; of a suitably arranged steam Intestimony that I claim the foregoing as box, connected with the exhaustof the-cylinmy own I have hereto affixed my signature 1n der,-a heatingcoil arranged inside of said the presence of two witnesses.

box, a pipe connection from the coil to a feed DAVID RISLEY. 5 pump,anda similar connection from the coil Witnesses:

to one side of the boiler, substantially as set E. TOWILLEGAR,

forth. 0. M. KINCAID.

